UNT Libraries Government Documents Department - 37 Matching Results

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Acenaphthene solvents for use in Building 313 Frost Test operation

Description: Acenaphtheno is a low-melting organic compound, C{sub 10}H{sub 6}(CH{sub 2}){sub 2}, used as a temperature indicating coating for slugs tested in the Frost Test induction coil. In preparation for this test, slugs are coated by spraying a 12 to 24 per cent by weight solution of acenaphthene in a high vapor pressure solvent on the rotating slug. The solvent evaporate leaving a thin, adherent coating of acenaphthene. This process is completely described in reference 1. To be entirely satisfactory … more
Date: June 26, 1951
Creator: Kratzer, W. K.
Item Type: Refine your search to only Report
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Base pressures measured on several parabolic-arc bodies of revolution in free flight at Mach numbers from 0.8 to 1.4 and at large Reynolds numbers

Description: Report presenting base pressures measured on several fin-stabilized bodies of parabolic-arc profile in free flight at a range of Mach and Reynolds numbers. The bodies varied in length but had the same afterbody ratios. Results regarding base pressure coefficients, side pressure coefficients, effect of afterbody length, and drag are provided.
Date: October 26, 1951
Creator: Katz, Ellis & Stoney, William E., Jr.
Item Type: Refine your search to only Report
open access

Calculated Performance of a Mercury-Compressor-Jet Powered Airplane Using a Nuclear Reactor as an Energy Source

Description: Memorandum presenting an analysis of a system consisting of a mercury turbine-driven air compressor a mercury condenser wherein heat was added to the compressed air. The heat addition to the mercury is accomplished in an intermediate heat exchanger (mercury boiler) which has a liquid metal, other than mercury, circulating through the opposite side and through a nuclear reactor. Results regarding the turbine-exhaust pressure, turbine-inlet pressure, condenser-inlet Mach number, effect of nacelle… more
Date: September 26, 1951
Creator: Doyle, R. B.
Item Type: Refine your search to only Report
open access

Effect of a deflectable wing-tip control on the low-speed lateral and longitudinal characteristics of a large-scale wing with the leading edge swept back 47.5 degrees

Description: Report presenting an investigation of the effect of a 20-percent-semispan deflectable wing-tip control on the low-speed lateral and longitudinal characteristics of a wing with the leading edge swept back 47.5 degrees, an aspect ratio of 3.5, and circular-arc-airfoil sections. The results indicate that the 20-percent-semispan wing-tip control should provide adequate lateral control over the angle-of-attack range investigated. Results regarding the effect of tip control on lateral characteristics… more
Date: April 26, 1951
Creator: Lange, Roy H. & Fink, Marvin P.
Item Type: Refine your search to only Report
open access

The Effect of Raking the Aileron Tips on the Lateral-Control and Hinge-Moment Characteristics of a 20-Percent-Chord Partial-Span Outboard Aileron on a Wing With Leading-Edge Swept Back 51.3 Degrees

Description: Report presenting an investigation at low speed to determine the lateral-control and hinge-moment characteristics of a 20-percent-chord unsealed partial-span outboard aileron with several plan forms. Results regarding the wing aerodynamic characteristics are also provided.
Date: November 26, 1951
Creator: Hammond, Alexander D.
Item Type: Refine your search to only Report
open access

Effect of Surface Finish on Fatigue Properties at Elevated Temperatures 1: Low-Carbon N-155 With Grain Size of A.S.T.M. 1

Description: Effect of three surface finishes of roughness 4 to 5, 20 to 25, and 70 to 80 micro inches rms on fatigue properties were determined for low-carbon N-155 alloy of grain size A.S.T.M. 1 at temperatures of 80 , 1000, 1350, and 1500 F. The fatigue properties for the various finishes differed appreciably at room temperature; however, after short periods at 1000 F and for all periods investigated at temperatures above 1000 F, the specimen finishes had the same fatigue strength. It was concluded that … more
Date: June 26, 1951
Creator: Ferguson, Robert R.
Item Type: Refine your search to only Report
open access

Experimental Investigation of Flow in the Rotating Passages of a 48-Inch Impeller at Low Tip Speeds

Description: Report presenting a study of the flow phenomena within the rotating passages of a 48-inch radial-inlet impeller at low tip speeds. Total and static pressures were measured within the impeller passages at two different tip speeds by using a suitable pressure-transfer device to transmit the pressures from the rotating passages to the stationary measuring station. Results regarding the overall compressor performance, static-pressure distribution along blades, total-pressure distribution across the… more
Date: June 26, 1951
Creator: Michel, Donald J.; Ginsburg, Ambrose & Mizisin, John
Item Type: Refine your search to only Report
open access

Free-flight performance of 16-inch diameter supersonic ram-jet units 4: performance of ram-jet units designed for combustion chamber inlet Mach number of 0.21 at free-stream Mach number of 1.6 over a range flight conditions

Description: Report presenting an investigation of 16-inch-diameter ram-jet units under free-flight conditions to determine performance at high subsonic, transonic, and supersonic velocities. Full-scale units were released from the airplane at high altitudes and accelerated by the engine thrust and force of gravity. Results regarding the diffuser total-pressure recovery, drag, thrust coefficient, and combustion are provided.
Date: February 26, 1951
Creator: Rabb, Leonard & North, Warren J.
Item Type: Refine your search to only Report
open access

Free-Spinning Tunnel Investigation of a 1/20-Scale Model of the Douglas X-3 Airplane

Description: Report discussing the spin and spin-recovery characteristics of a model of the Douglas X-3 airplane in a free-spinning tunnel. The pitching-moment characteristics of the scale model were not found to be typical of larger scale results. The results indicated that at an altitude range of 15,000 to 30,000 feet, the X-3 will not exhibit unusual trim tendencies and it will be difficult to obtain erect spins unless the ailerons are full with the spin.
Date: December 26, 1951
Creator: Hultz, Burton E.
Item Type: Refine your search to only Report
open access

Investigation of wear and friction properties under sliding conditions of some materials suitable for cages of rolling-contact bearings

Description: "An investigation of wear and friction properties of a number of materials sliding against SAE 52100 steel was conducted. These materials included brass, bronze, beryllium copper, monel, nichrome v, 24S-T aluminum, nodular iron, and gray cast iron. The metals investigated may be useful as possible cage (separator or retainer) materials for rolling-contact bearings of high-speed turbine engines. The ability of materials to form surface films that prevent welding is a most important factor in bot… more
Date: March 26, 1951
Creator: Johnson, Robert L.; Swikert, Max A. & Bisson, Edmond E.
Item Type: Refine your search to only Report
open access

Investigation of wing-tip ailerons on a 51.3 degrees sweptback wing at transonic speeds by the transonic-bump method

Description: Report presenting an investigation to determine the aerodynamic characteristics of deflectable wing-tip ailerons on a sweptback wing in the Langley high-speed tunnel by means of the transonic bump technique. Three ailerons were investigated, one with a basic wing-plan form and two with an extended-tip plan form. Results regarding the longitudinal aerodynamic characteristics, rolling-moment data, control effectiveness, and lift effectiveness are provided.
Date: November 26, 1951
Creator: Moseley, William C., Jr. & Watson, James M.
Item Type: Refine your search to only Report
open access

Low-Speed Characteristics of a Wing Having 63 Degrees Sweepback and Uniform Camber

Description: Memorandum presenting low-speed tests of a semispan tapered wing with the leading edge swept back 63 degrees and with the NACA 0010 section cambered for a lift coefficient of 1.0 perpendicular to the leading edge to determine the extent to which stability characteristics could be improved by cambering the wing.
Date: June 26, 1951
Creator: Rose, Leonard M.
Item Type: Refine your search to only Report
open access

Measurement of distortion in second experimental control rod for argonne naval reactor with constant transverse temperature gradient and uniform longitudinal temperature distribution

Description: Report presenting measurements of the thermal distortion of a stainless-steel clad, cadmium-silver reactor control rod. The temperature pattern of the rod is described. The maximum reduction in clearance obtained in the tests was 0.203 inch.
Date: September 26, 1951
Creator: Nagey, T. F. & Lietzke, A. F.
Item Type: Refine your search to only Report
open access

Measurement of distortion in second experimental control rod with temperature patterns simulating shim rod out and shim rod 50 percent inserted for Argonne Naval Reactor

Description: Thermal distortion tests were made on a stainless steel clad, cadmium-silver control rod furnished by the Argonne National Laboratory. Two temperature patterns supplied by the Argonne National Laboratory were simulated in these tests; one represented the shim-rod-out condition and the other the shim-rod-50-percent-inserted condition. The greatest reduction in clearance effected by thermal distortion was 0.076 inch. No permanent set of the control rod was observed after repeated heating and cool… more
Date: September 26, 1951
Creator: Lietzke, A. F. & Nagey, T. F.
Item Type: Refine your search to only Report
open access

Note on the Doppler Effect

Description: The following report notes a general formula for the determination of the effect of atomic motion on nuclear cross sections, and evaluate the expression exactly in a few cases of interest.
Date: November 26, 1951
Creator: Coveyou, R. R.
Item Type: Refine your search to only Report
open access

The Origin of Aerodynamic Instability of Supersonic Inlets at Subcritical Conditions

Description: Memorandum presenting an investigation of the phenomenon of the starting of aerodynamic instability or buzz in supersonic inlets with external compression. The starting of the buzz has been related to the existence in the flow field of a velocity discontinuity across a vortex sheet which originates at a shock intersection. Results regarding the inlets without separation on the central body, inlets with separation on the central body, the regulation of entering volume flow at angles of attack, e… more
Date: January 26, 1951
Creator: Ferri, Antonio & Nucci, Louis M.
Item Type: Refine your search to only Report
open access

Proportional Fission Neutron Counters

Description: Abstract: Some proportional fission neutron counters are described with information on methods of preparation and details of a circuit for a portable model. The portable instrument has an efficiency of .01% for neutrons from polonium beryllium sources.
Date: March 26, 1951
Creator: Rohr, R. C.; Rohrer, E. R. & Macklin, R. L.
Item Type: Refine your search to only Report
open access

Resistance of Various Materials to Attack by Molten Bismuth-Lead Eutectic at Elevated Temperatures

Description: "The resistance of 40 materials including alloys, ceramics, ceramals, and pure metals to attack by bismuth-lead eutectic at temperatures between 1500 and 2000 F was investigated. A velocity of 15 feet per second was maintained between the material surface and the bismuth-lead eutectic. Those materials found to be resistant to this attack included 17 of the ceramals and ceramics, graphite, and arc-cast molybdenum" (p. 1).
Date: September 26, 1951
Creator: Gangler, James J. & Engel, Walter J.
Item Type: Refine your search to only Report
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